Biomethanization of the Mixture of Cattle Manure, Pig Manure and Poultry Manure in Co-Digestion with Waste Peels of Pineapple Fruit and Content of Chicken-Gizzard - Part II: Optimization of Process Variables

RESEARCH ARTICLE Biomethanization of the Mixture of Cattle Manure, Pig Manure and Poultry Manure in Co-Digestion with Waste Peels of Pineapple Fruit and Content of Chicken-Gizzard Part II: Optimization of Process Variables O. A. Aworanti, S. E. Agarry and O. O. Ogunleye Biochemical and Chemical Engineering Biotechnology Laboratory, Department of Chemical Engineering, Ladoke Akintola University of Technology, P. M. B. 4000, Ogbomoso, Nigeria. Biochemical and Bioenvironmental Laboratory, Department of Chemical Engineering, Delta State University, Oleh Campus, Abraka, P.M.B. 22, Nigeria